CN106345371A - Device for feeding polyolefin catalyst - Google Patents
Device for feeding polyolefin catalyst Download PDFInfo
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- CN106345371A CN106345371A CN201510422837.XA CN201510422837A CN106345371A CN 106345371 A CN106345371 A CN 106345371A CN 201510422837 A CN201510422837 A CN 201510422837A CN 106345371 A CN106345371 A CN 106345371A
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- intubation
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- cyclone
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Abstract
The invention provides a device for feeding a polyolefin catalyst. The device comprises a reactant feeding pipe, a catalyst feeding plug-in pipe which is plugged into the reactant feeding pipe and extends to the downstream of the reactant feeding pipe, and a hydrocyclone arranged in the catalyst feeding plug-in pipe, wherein the hydrocyclone is used for enabling a catalyst passing through the hydrocyclone to flow spirally. Under a condition of no big structural change for the existing catalyst feeding device, the flowing condition in the catalyst feeding device is effectively improved, the stable operation period of the device is prolonged, and the risk of shut down caused by blockage of the catalyst feeding device is reduced.
Description
Technical field
The present invention relates to a kind of polyolefin catalyst feed arrangement.
Background technology
Polyacrylic continuous way polymerization technique is polypropylene manufacturing process commonly used in the world.Different poly- third
The reactor that alkene technique is mainly manifested in employing is different, such as: the spheripol of Basel (basell) polyolefins company
Technique homopolymerization kettle be two series connection annular tube type reactors so also becoming loop polypropylene technique, its gas phase
Reactor adopts dense-phase fluidized bed form.The spherizone technique homopolymerization kettle of basell company follows for multi-region
Loop reactor, its gas phase reaction kettle adopts dense-phase fluidized bed form.The unipol of Dow Chemical (dow)
Technique adopts gas-phase fluidized-bed, and homopolymerization and copolymerization are carried out in two fluid beds of series connection.Borealis AG
(borealis) borstar pp technique includes a ring canal reaction kettle and 2～3 gas phase reaction kettles.Ineos
The innovene gas-phase process of group's Pty Ltd (ineos) adopts two horizontal gas phase kettle reactors,
Inside there is mechanical agitation, the residence time destribution of material is streamed close to plunger.Abb lomars group of the U.S.
(abb-lummus) novolen gas-phase process is using two vertical gas phase stirred tanks, with series connection
Double kettles can produce impact copolymer.The hypol technique of three well oiling companies is using stirring liquid phase reactor kettle and gas phase
The mode that reactor combines.
The catalyst of propylene polymerization is usually Ziegler-Natta catalyst (ziegler-natta).Such catalyst
Usually contain (1) ingredient of solid catalyst；(2) organo-aluminum compound cocatalyst component；(3) and appoint
Selection of land adds external electron donor component.
Its main component of ingredient of solid catalyst is magnesium, titanium, halogen and internal electron donor, operational concrete
Example be disclosed in application publication number be cn85100997, cn98126383.6, cn98111780.5,
cn98126385.2、cn93102795.0、cn00109216.2、cn99125566.6、cn99125567.4、
In the patent documentation of cn02100900.7.
The organo-aluminum compound of cocatalyst component is usually alkyl aluminum compound, preferably trialkylaluminium such as: front three
Base aluminum, triethyl aluminum, triisobutyl aluminium, three n-butylaluminum, trioctylaluminum etc..Industrial three second are usually used
Base aluminum is as cocatalyst component.
External donor compound as optional catalyst component is usually organo-silicon compound, and its formula is
Rnsi (or') 4-n, 0 ＜ n≤3 in formula, wherein, r and r' is identical or different, and be each independently selected from alkyl,
Cycloalkyl, aryl and haloalkyl, r can also be halogen or hydrogen atom.Specifically, described organosilicon compound
Thing is usually: Cyclohexyl Methyl Dimethoxysilane, dicyclopentyl dimethoxyl silane, diisopropyl dimethoxy
Base silane, second, isobutyl dimethoxy silane etc..
With ti/al molar ratio computing, the solid catalyst activity component of titaniferous and organo-aluminum compound promoter group
/ ratio can be 1:25 to 1:1000.With al/si molar ratio computing, described alkyl aluminum compound is organic with described
The ratio of silicon compound can be 3:1 to 100:1.
Three kinds of components of described ziegler-natta catalyst can be added directly in polymer reactor it is also possible to
After complexation pre- known to industry and/or prepolymerization, it is then added in reactor.In loop polypropylene technique
After middle Ziegler-Natta catalyst and triethyl aluminum and the pre- complexation of organo-silicon compound, enter under the conditions of liquid-phase bulk
The continuous prepolymerization of row.Prepolymerized temperature control is at 0 to 40 DEG C.Some the Gaseous Polymerization of PPs are also adopted by
Similar approach processes catalyst.
Produce in polyacrylic prepolymerization workshop section in annular-pipe reactor liquid phase noumenal method, catalyst and alkyl aluminum and give
Electron carries out pre-contact (pre- complexation) and forms active catalyst afterwards.Active catalyst can make propylene be polymerized,
And can not make propylene that polyreaction occurs without the catalyst of pre- complexation.Active catalyst and unreacted alkyl aluminum
Enter in catalyst charge device through catalyst charge pipe with electron donor mixture, then mix with propylene.Third
Alkene is entered pre-polymerization reactor after being mixed with active catalyst and carries out prepolymerization.After prepolymerization, with prepolymer
Active catalyst and propylene enter annular-pipe reactor.
Active catalyst becomes after contact propylene that to be suspended in propylene, polypropylene quality ever-increasing solid
Body.Stick on catalyst charge device or pipeline thereafter if there are active catalyst, poly- third on catalyst
Alkene is on the increase, will blocking catalyst feed arrangement.In fact catalyst charge device has been whole endless tube
Blocking in polypropylene plant point occurred frequently.Once blocking catalyst feed arrangement, whole polypropylene plant just interrupts
Catalyst charge is it is impossible to the production polypropylene that remains in operation.Its treating method can only be to take catalyst charge dress apart
Put, manual removal tamper.Substantial amounts of alkyl aluminum is contained in active catalytic agent composition, and the great danger of alkyl aluminum
Dangerous, run into water or air will occur to explode or burn.Therefore before taking catalyst charge device apart it is necessary to
With mineral oil, catalyst charge device is rinsed repeatedly to reduce the alkyl aluminium content in device.So taking apart every time
All very waste and great danger with cleaning catalyst charge device.
Those skilled in the art take many kinds of measures to reduce the blocking of catalyst charge device.Such as
Increase the flow of the propylene rinsing catalyst charge device；Reduce the propylene temperature rinsing catalyst charge device.
But these measures still can not thoroughly solve the blockage problem of catalyst charge device, is still necessary to using standby catalysis
The method of agent feed arrangement operates come the continuous-stable to ensure process units.
Content of the invention
For the problems referred to above, the invention provides a kind of polyolefin catalyst feed arrangement.This catalyst charge fills
Put the problem of the blocking that catalyst charge device can be reduced or avoided, therefore reduce dangerous catalyst of taking apart and enter
Material device operation, thus reach guarantee device steady running, cost-effective purpose.
The present invention provides a kind of device of polyolefin catalyst charging, comprising: reaction-ure feeding pipe, insertion is instead
Answer catalyst charge intubation that is in thing feed pipe and extending to the downstream of reaction-ure feeding pipe, and be arranged on and urge
Agent feeds the cyclone in intubation,
Wherein, cyclone is used for the catalyst guiding curl flowing through cyclone.
In a specific embodiment, cyclone is configured to the torsion reversed around the axis of catalyst charge intubation
Piece, the space between cyclone and catalyst charge intubation forms helical channel.
In a specific embodiment, the both sides of cyclone are all connected to the internal perisporium of catalyst charge intubation,
The inner space of catalyst charge intubation is divided into two helical channels mutually entwined by cyclone.
In a specific embodiment, one end of cyclone at least reverses 360 ° with respect to the other end.
In a specific embodiment, reaction-ure feeding pipe includes the main of one end closing and is vertically connected at
The arm of main, the end that catalyst charge intubation is closed from main is inserted in main, catalyst charge intubation
The port of export extended the junction of arm and main.
In a specific embodiment, catalyst charge intubation is coaxial with main.
In a specific embodiment, reaction-ure feeding pipe is used for injecting the solution of alpha-olefin or alpha-olefin.
In a specific embodiment, alpha-olefin is propylene, and catalyst charge intubation is used for injecting activity poly third
Alkene catalyst.
In a specific embodiment, the end of the port of export of catalyst charge intubation is big to the distance of cyclone
In 20 millimeters, the internal perisporium of part to cyclone of the end of the port of export of catalyst charge intubation and periphery
Wall is all smooth.
In a specific embodiment, the end of the port of export of catalyst charge intubation is big to the distance of cyclone
In 30 millimeters.
Reactant common for ethylene or contain vinyl solution, propylene or contain propylene solution.
Present invention is particularly suitable for the catalyst charge that active catalyst is contacted with the solution of alpha-olefin or alpha-olefin
Device.It is particularly well-suited in loop polypropylene technique, stating reactant under these conditions is liquid propene, and this is urged
Agent is polypropylene catalyst.When contacting propylene, polypropylene catalyst is active catalyst.
The good effect of the technology is: adopt the present invention program, can be not to existing catalyst charge device
In the case of doing big structural change, it is effectively improved mobility status in catalyst charge device, extension fixture is stable
Cycle of operation, reduces and leads to, because of the blocking of catalyst charge device, the risk stopped.And decrease urging of danger
Cleaning operation taken apart by agent feed arrangement, from reducing the danger of device, reduce disappearing of mineral oil and spare part
Consume, reduce the workload of attending device.
Brief description
Hereinafter will be based on embodiment, and refer to the attached drawing the present invention is described in more detail.Wherein:
Fig. 1 shows that the complete section of the device of polyolefin catalyst charging in one embodiment of the present of invention is illustrated
Figure；
Fig. 2 shows the partial schematic sectional view of the device of polyolefin catalyst charging in Fig. 1；
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described, is not intended to limit the scope of the present invention.
As shown in figure 1, the device of polyolefin catalyst charging includes tee pipe fitting 1, inserts in tee pipe fitting 1
Cyclone 4 in catalyst charge intubation 2 for catalyst charge and setting catalyst charge intubation 2.
Catalyst guiding curl is flowed by cyclone 4.
Tee pipe fitting 1 includes main 11, the first flange 111 being separately positioned on main 11 two ends and the second method
Orchid 112 and the vertical arm 12 connected on main 11.Main 11 is so structured that pipe.First flange
111 and second flange 112 be configured to ring-shaped.The two ends of main 11 are respectively welded first flange 111 and second
Flange 112, and make first flange 111 and the axis of second flange 112 and the dead in line of main 11.The
The internal diameter of one flange 111 is less than the internal diameter of main 11.The internal diameter of second flange 112 is equal to the internal diameter of main 11.
Second flange 112 is used for connecting downstream pipe.First through hole 113 is had on the side wall of main 11.Preferably,
This first through hole 113 is located at the middle part of main 11.
Arm 12 is so structured that pipe.The internal diameter of arm 12 is equal to the first through hole 113 in main 11
Diameter.The port of export of arm 12 is welded on the periphery wall of main 11, and the port of export of arm 12 and
One through hole 113 connects relatively.Preferably, the internal diameter of arm 12 is equal with the internal diameter of main 11.So, arm
12 through holes passing through on main 11 side plate connect main 11.
The through hole of first flange 111 constitutes the first entrance of tee pipe fitting 1, and the arrival end of arm 12 constitutes three
The second entrance of way pipe fitting 1, the through hole of second flange 112 constitutes the outlet of tee pipe fitting 1.Reactant is from
Two entrances are flowed in tee pipe fitting 1, and catalyst charge intubation 2 can be inserted into tee T from first entrance
In part 1.Reactant and catalyst all flow out to downstream pipe 6 from the outlet of tee pipe fitting 1.So, react
Thing flows into tee pipe fitting 1 from the arrival end of arm 12, flows through first through hole 113, then through second flange 112
Through hole flow into downstream pipe 6.So, main 11 and arm 12 form reaction-ure feeding pipe.
Catalyst charge intubation 2 is configured to the pipe that external diameter is equal to the internal diameter of first flange 111.Catalyst charge
The port of export 21 of intubation 2 is inserted in tee pipe fitting 1 from the through hole of first flange 111, and to tee pipe fitting 1
Downstream pipe 6 extend.The port of export 21 of catalyst charge intubation 2 at least extended first through hole 113.Urge
Agent charging intubation 2 is coaxial with main 11.
Cyclone 4 is arranged in catalyst charge intubation 2 it is preferable that cyclone 4 is inserted near catalyst charge
The port of export of pipe 2.
As shown in Fig. 2 cyclone 4 is configured to torque blade.Torque blade is the platy structure reversing.Torque blade around
The axis of catalyst charge intubation reverses.The side of torque blade is the cylindrical screw coaxial with catalyst charge intubation
Line or conical spiral.So, the space shape between the internal perisporium of catalyst charge intubation and the plate face of torque blade
The passage of curl., when cyclone 4, due to the stop of cyclone 4, catalyst is along spiral shell for catalyst
The channel flow of rotation shape, and catalyst guiding curl is flowed.When catalyst flows in the shape of a spiral from catalysis
When agent feeds the mouth of pipe outflow of intubation 2, catalyst is difficult to be bonded at inwall or the catalyst of catalyst charge intubation 2
The opening of charging intubation 2, reactant is not easy to entrance catalyst charge intubation 2 of playing a reversed role, thus avoiding
Blocking catalyst feeds intubation 2.
Preferably, the both sides of cyclone 4 are all connected to the internal perisporium of described catalyst charge intubation, cyclone 4
The inner space of catalyst charge intubation 2 is divided into two described helical channels mutually entwined.More preferably
Ground, one end of cyclone at least reverses 360 ° with respect to the other end.
Preferably, in the part to cyclone 4 for the end of the port of export 21 of catalyst charge intubation 2,
Periphery wall polishes smooth.The end of the port of export 21 of catalyst charge intubation 2 is more than to the distance of cyclone 4
20 millimeters, so can reduce the adhesion in catalyst charge intubation 2 of catalyst and reactant.Preferably greater than
30 millimeters, more preferably greater than 40 millimeters.
This device also includes cannula holder 3.Cannula holder 3 is arranged on first flange 111 and deviates from the second method
Blue 112 side.Cannula holder 3 includes clamping part 32 and the supporting part 31 supporting clamping part 32.Folder
The middle part holding portion 32 is provided with through hole.The arrival end of catalyst charge intubation 2 is from the side grafting of clamping part 32
To in this through hole and be fixed on clamping part 32.It is provided with sealing gasket between clamping part 32 and first flange 111
Piece, with bolts between clamping part 32 and first flange 111.So, clamping part 32 and first flange
111 is fixed with each other, and has preferable sealing effectiveness between the two.Supporting part 31 one end is fixed on folder
Hold the other end in portion 32 to be fixed in frame, thus, catalyst charge intubation 2 is fixed against.
This device also includes catalyst inlet threeway 5.Catalyst inlet threeway 5 includes three mouths of pipe.Three pipes
It is interconnected between mouthful.Catalyst inlet threeway 5 is arranged on the side that cannula holder 3 deviates from tee pipe fitting 1,
And so that the entrance of the catalyst charge intubation 2 in one of mouth of pipe and cannula holder 3 is connected.Catalyst enters
Two other mouth of pipe of mouth threeway 5 connects the feeding pipe of flushing oil and catalyst respectively.
Although by reference to preferred embodiment, invention has been described, without departing from the scope of the present invention
In the case of, it can be carried out with various improvement and part therein can be replaced with equivalent.Especially, only
Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment all can combine in any way
Come.The invention is not limited in specific embodiment disclosed herein, but include falling within the scope of the appended claims
All technical schemes.
Claims (10)
1. a kind of device of polyolefin catalyst charging is it is characterised in that include: reaction-ure feeding pipe, inserts
Enter catalyst charge intubation that is in described reaction-ure feeding pipe and extending to the downstream of described reaction-ure feeding pipe,
And it is arranged on cyclone in described catalyst charge intubation,
Wherein, described cyclone is used for the catalyst guiding curl flowing through described cyclone.
2. device according to claim 1 is it is characterised in that described cyclone is configured to urge around described
Agent feeds the torque blade that the axis of intubation reverses, the sky between described cyclone and described catalyst charge intubation
Between formed helical channel.
3. device according to claim 2 is it is characterised in that the both sides of described cyclone are all connected to
The internal perisporium of described catalyst charge intubation, described cyclone will be equal for the inner space of described catalyst charge intubation
It is divided into two described helical channels mutually entwined.
4. device according to claim 3 is it is characterised in that one end of described cyclone is with respect to another
One end at least reverses 360 °.
5. device according to any one of claim 1 to 4 is it is characterised in that described reactant enters
Expects pipe includes the main of one end closing and the arm being vertically connected at described main, described catalyst charge intubation
It is inserted in described main from the end of described main closing, the port of export of described catalyst charge intubation extended
Described arm and the junction of described main.
6. device according to claim 5 it is characterised in that described catalyst charge intubation with described
Main is coaxial.
7. device according to any one of claim 1 to 6 is it is characterised in that described reactant enters
Expects pipe is used for injecting the solution of alpha-olefin or alpha-olefin.
8. the device according to claim 7 is it is characterised in that described alpha-olefin is propylene, described
Catalyst charge intubation is used for injecting active polypropylene catalyst.
9. device according to any one of claim 1 to 8 is it is characterised in that described catalyst enters
The end of the port of export of material intubation is more than 20 millimeters to the distance of cyclone, the institute of described catalyst charge intubation
Internal perisporium and the periphery wall of stating the part to cyclone for the end are all smooth.
10. device according to claim 9 it is characterised in that described catalyst charge intubation described
End is more than 30 millimeters to the distance of cyclone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422837.XA CN106345371B (en) | 2015-07-17 | 2015-07-17 | A kind of device of polyolefin catalyst charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422837.XA CN106345371B (en) | 2015-07-17 | 2015-07-17 | A kind of device of polyolefin catalyst charging |
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| CN106345371A true CN106345371A (en) | 2017-01-25 |
| CN106345371B CN106345371B (en) | 2019-07-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170001A (en) * | 1996-06-06 | 1998-01-14 | 联合碳化化学品及塑料技术公司 | Method for feeding liquid catalyst to fluidized bed polymerization reactor |
| CN101489663A (en) * | 2006-07-20 | 2009-07-22 | 西湖朗维尤公司 | Process and apparatus for olefin polymerization in a fluidized bed reactor |
| US20090264278A1 (en) * | 2008-04-22 | 2009-10-22 | Fina Technology, Inc. | Method and Apparatus for Addition of an Alkali Metal Promoter to a Dehydrogenation Catalyst |
| CN102170964A (en) * | 2008-10-03 | 2011-08-31 | 英尼奥斯欧洲有限公司 | Process for the introduction of a polymerisation catalyst into a gas-phase fluidised bed |
| CN203036187U (en) * | 2013-01-04 | 2013-07-03 | 徐明冬 | Self-cleaning pipeline system |
-
2015
- 2015-07-17 CN CN201510422837.XA patent/CN106345371B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170001A (en) * | 1996-06-06 | 1998-01-14 | 联合碳化化学品及塑料技术公司 | Method for feeding liquid catalyst to fluidized bed polymerization reactor |
| CN101489663A (en) * | 2006-07-20 | 2009-07-22 | 西湖朗维尤公司 | Process and apparatus for olefin polymerization in a fluidized bed reactor |
| US20090264278A1 (en) * | 2008-04-22 | 2009-10-22 | Fina Technology, Inc. | Method and Apparatus for Addition of an Alkali Metal Promoter to a Dehydrogenation Catalyst |
| CN102170964A (en) * | 2008-10-03 | 2011-08-31 | 英尼奥斯欧洲有限公司 | Process for the introduction of a polymerisation catalyst into a gas-phase fluidised bed |
| CN203036187U (en) * | 2013-01-04 | 2013-07-03 | 徐明冬 | Self-cleaning pipeline system |
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| CN106345371B (en) | 2019-07-19 |
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